Poisson's Ratio - ASTM E132 Plastic Test Standard

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Poisson's Ratio - ASTM E132

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The negative ratio of lateral strain to axial strain.

ν = -ε_y / ε_x

Poisson Effect

Testing is performed by running a tensile test on a specimen equipped with two extensometers. One extensometer is aligned parallel to the applied tensile stress while the second extensometer is aligned perpendicular to the tensile stress.

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